Abstract
When measuring sleep status, both objective and subjective sleep parameters are used. In particular, Subjective sleep variable is an extremely important assessment tool to capture changes in the psychological state of the individuals complain with sleep disturbances, since the subjective evaluation reflects the "worries and distresses " of them. This paper describes sleep diaries and self-reported scales as subjective sleep parameters. The sleep diary is used to "visualize " the daily changes in the sleep state of the patient. It is recommended as the gold standard for assessing subjective sleep state. The self-reported scales are a relatively simple way to measure changes in sleep problems. In particular, the Pittsburgh Sleep Quality Index (PSQI) and the Athens Insomnia Scale (AIS) are the gold standard for measuring sleep quality and insomnia symptoms and have been translated in many countries. In addition, the Epworth Sleepiness Scale (ESS) and Restorative Sleep Questionnaire (RSQ), which measure sleepiness and restfulness as daytime symptoms, were also described. Finally, the importance of combining not only subjective but also objective sleep assessment tools was discussed.
https://ror.org/05xbyzq55 
